Creating rectified images of architectural features allows for measurements to be taken, and to create reference photos that can be annotated and used for archives, reports, modelling and project planning purposes. The most useful rectified photos do require some more careful planning though....

Taking photographs of cracked stonework requires care and good lighting, but 150 feet up inside a needle spire dating from the 15th century needs a bit more flexibility and inventiveness to show the state of the structure....

The fish-eye lens is often dismissed as a bit of a one-trick pony. It’s associated with oddly distorted views, and effects often politely referred to as ‘artistic’.
In reality, the circular fisheye view, (which is all I’m looking at here) is a perfectly valid projection...